The 37-year-old actress has denied rumours she is dating the 'Guardians of the Galaxy' star and personally reached out to Anna, Chris' ex, to say there is ''0% truth'' in the rumours.

In the screenshot posted on her Instagram account, Olivia wrote: ''Hey there! Sooo... I would never respond to random tabloid stories, but since we know each other I wanted to reach out to you personally to tell you the story about me and Chris dating has 0% truth. I'm sure you already know it's not true, or maybe didn't care either way, but I just wanted to reach out personally to tell you it's not true. Anyway, I hope you had an amazing holiday and an even better 2018. (sic)''

However, Anna would be ''thrilled'' in the rumours were true and would love Olivia to be her ''new sister in law''.

In the screenshot, Anna's message reads: ''Hi!!!! Oh my god - this town is so f***ing crazy - you are so sweet to text - I love you - having said that if you were my new sister in law I would be thrilled - let's please catch up soon (sic)''

Meanwhile, Anna previously insisted she is still ''great friends'' with her estranged husband Chris.

She said: ''We're great. He's amazing. We're great friends and we always will be ... He was so kind to [write the foreword for her book]. I decided to write a book about my life experiences and when I started, I thought, 'This will be a great journey. This is a great idea. I know what I'm doing. I'm 40, I can write a book.' [Then] it's like, 'No. What was I thinking? This is a terrible idea.' But what I like to think is the take away [is] that a lot of our problems tend to be universal - the idea of jealousy, loneliness, heartbreak. There's a commonality no matter what profession you're in or where you live and that's something the podcast has taught me. We all have the same stuff going on.''